/* DE1: $Id: r_model.h 1713 2004-05-31 15:04:44Z skyjake $
 * Copyright (C) 2003, 2004 Jaakko Keränen <jaakko.keranen@iki.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not: http://www.opensource.org/
 */

/*
 * r_model.h: 3D Model Resources
 */

#ifndef __DOOMSDAY_REFRESH_MODEL_H__
#define __DOOMSDAY_REFRESH_MODEL_H__

#include "gl_model.h"

#define MAX_FRAME_MODELS		DED_MAX_SUB_MODELS

// Model frame flags.
#define MFF_FULLBRIGHT			0x0001
#define MFF_SHADOW1				0x0002
#define MFF_SHADOW2				0x0004
#define MFF_BRIGHTSHADOW		0x0008
#define MFF_MOVEMENT_PITCH		0x0010	// Pitch aligned to movement.
#define MFF_SPIN				0x0020	// Spin around (for bonus items).
#define MFF_SKINTRANS			0x0040	// Color translation -> skins.
#define MFF_AUTOSCALE			0x0080	// Scale to match sprite height.
#define MFF_MOVEMENT_YAW		0x0100
#define MFF_DONT_INTERPOLATE	0x0200	// Don't interpolate from the frame.
#define MFF_BRIGHTSHADOW2		0x0400
#define MFF_ALIGN_YAW			0x0800
#define MFF_ALIGN_PITCH			0x1000
#define MFF_DARKSHADOW			0x2000
#define MFF_IDSKIN				0x4000	// Mobj id -> skin in skin range
#define MFF_DISABLE_Z_WRITE		0x8000
#define MFF_NO_DISTANCE_CHECK	0x00010000
#define MFF_SELSKIN				0x00020000
#define MFF_PARTICLE_SUB1		0x00040000	// Sub1 center is particle origin.
#define MFF_NO_PARTICLES		0x00080000	// No particles for this object.
#define MFF_SHINY_SPECULAR		0x00100000	// Shiny skin rendered as additive.
#define MFF_SHINY_LIT			0x00200000	// Shiny skin is not fullbright.
#define MFF_IDFRAME				0x00400000	// Mobj id -> frame in frame range
#define MFF_IDANGLE				0x00800000	// Mobj id -> static angle offset
#define MFF_DIM					0x01000000	// Never fullbright.
#define MFF_SUBTRACT			0x02000000	// Subtract blending.
#define MFF_REVERSE_SUBTRACT	0x04000000	// Reverse subtract blending.
#define MFF_TWO_SIDED			0x08000000	// Disable culling.
#define MFF_NO_TEXCOMP			0x10000000	// Never compress skins.
#define MFF_WORLD_TIME_ANIM		0x20000000

typedef struct {
	short           model;
	short           frame;
	char            framerange;
	int             flags;
	short           skin;
	char            skinrange;
	float           offset[3];
	byte            alpha;
	short           shinyskin;	   // Skinname ID (index)
} submodeldef_t;

typedef struct modeldef_s {
	char            id[33];

	state_t        *state;		   // Pointer to the states list (in dd_defns.c).
	int             flags;
	unsigned int    group;
	int             select;
	short           skintics;
	float           intermark;	   // [0,1) When is this frame in effect?
	float           interrange[2];
	float           offset[3];
	float           resize, scale[3];
	float           ptcoffset[MAX_FRAME_MODELS][3];
	float           visualradius;
	ded_model_t    *def;

	// Points to next inter-frame, or NULL.
	struct modeldef_s *internext;

	// Points to next selector, or NULL (only for "base" modeldefs).
	struct modeldef_s *selectnext;

	// Submodels.
	submodeldef_t   sub[MAX_FRAME_MODELS];	// 8
} modeldef_t;

extern modeldef_t *models;
extern int      nummodels;
extern int      useModels;
extern float    rModelAspectMod;

void            R_InitModels(void);
void            R_ShutdownModels(void);
void            R_ClearModelPath(void);
void            R_AddModelPath(char *addPath, boolean append);
float           R_CheckModelFor(struct mobj_s *mo, modeldef_t ** mdef,
								modeldef_t ** nextmdef);
modeldef_t     *R_CheckIDModelFor(const char *id);
int             R_ModelFrameNumForName(int modelnum, char *fname);
void            R_SetModelFrame(modeldef_t * modef, int frame);
void            R_SetSpriteReplacement(int sprite, char *modelname);
int             R_FindModelFile(const char *filename, char *outfn);
byte           *R_LoadSkin(model_t * mdl, int skin, int *width, int *height,
						   int *pxsize);
void            R_PrecacheSkinsForMobj(struct mobj_s *mo);
void            R_PrecacheModelSkins(modeldef_t * modef);

#endif